botany

Which group of algae is closely related to plants and plays a significant role in the food chain?

• Diatoms
• Red algae
• Brown algae
• Green algae

What is the main role of green algae in the food chain?

• Secondary consumers
• Apex predators
• Decomposers
• Primary producers

Where are red algae typically found, and what is their economic significance?

• Freshwater, used in biofuel production
• Marine environments, used in the production of agar
• Forests, used in pharmaceutical research
• Deserts, used in cosmetics

What is the economic significance of red algae?

• Used in biofuel production
• Used in cosmetics
• Used in the production of agar
• Used in pharmaceutical research

Where are brown algae primarily found, and what distinguishes them?

• Freshwater, small size
• Marine environments, large size and complex structures
• Deserts, red pigmentation
• Forests, unique silica shell

Which group of algae is primarily harvested for use in food products, cosmetics, and biofuels?

• Red algae
• Brown algae
• Diatoms
• Green algae

Where are brown algae primarily harvested from, and for what purposes?

• Freshwater, used in pharmaceutical research
• Marine environments, used in biofuel production
• Deserts, used in cosmetics
• Marine environments, used in food products, cosmetics, and biofuels

What distinguishes diatoms from other algae, and what is their ecological role?

• Red pigmentation, apex predators
• Chlorophyll content, decomposers
• Silica shell, primary producers
• Calcium carbonate shell, secondary consumers

Which group of algae has a unique silica shell and is crucial in the carbon cycle?

• Diatoms
• Red algae
• Green algae
• Brown algae

What is a distinctive feature of diatoms, and what role do they play in ecosystems?

• Silica shell, primary producers in aquatic ecosystems
• Calcium carbonate shell, secondary consumers in freshwater ecosystems
• Chlorophyll content, decomposers in terrestrial ecosystems
• Red pigmentation, apex predators in marine ecosystems